Depends if you just want it fixed cheap or want some more power better noise but more cost? Check the rocker cover and the oil return on the turbo as these are both common to leak.Oil wise i and quite a few others use 10w 40 semi from vauxhall.

_________________life in the fast lane with 4 kids doing 70mph in the arden zaffy

i use 5-30w oil only as its fully sinthetic and apparently better for the trubo.. as the fully synthetic doesnt coagulate in the turbo when the engine is turned off, whereas the semi (10-40w ) can..when you say flexi has gone what do you mean.....is it blowing?? as its common for the trumpet ends either side of the flexi to come away from the pipes ..and this isnt a problem..(sons astra gsi just past MOT like this)

Re oil leak , just give everywhere a good wipe over and place news paper under car engine and run till temp up to normal ...88/90deg and look to where the drips are coming from , then have a closer inspection..to find exactly ...then let us know on here and amybe we can advise further..

when you say flexi has gone what do you mean.....is it blowing?? as its common for the trumpet ends either side of the flexi to come away from the pipes ..and this isnt a problem..(sons astra gsi just past MOT like this)

Re oil leak , just give everywhere a good wipe over and place news paper under car engine and run till temp up to normal ...88/90deg and look to where the drips are coming from , then have a closer inspection..to find exactly ...then let us know on here and amybe we can advise further..

Also good to hear about your orig airbox being better than k&n..unit

Cheers for the advice on the oil leak something to do over the course of the weekend i think. yeah the end closest to the back of the car on the flexi has come away and also on the inside of it, its flexing badly. went under the car in kwik fit and had look myself. so thats why i am thinking stainless through nd through

Surprising you pay god money for a quality part and it drops the performance off on the car?!?!?!?!?!